a = {}
for i=1,10 do
    -- io.read 读取终端输入
    a[i] = io.read()
end
-- ipairs 遍历顺序随机
for _,value in ipairs(a) do
    print(value)
end
i = 1
while i < #a do
    print(a[i])
    i = i + 1
end
for x=1,#a do 
    print(a[x])
end
y = {1,2,3,4}
print(#y)